From: Stephan Bosch <stephan.bosch@open-xchange.com>
Date: Fri, 21 Mar 2025 04:06:20 +0000 (+0100)
Subject: lib: unichar - Implement uni_ucs4_to_titlecase() using the new Unicode character... 
X-Git-Tag: 2.4.2~623
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7bef9b4a0a4e848e47601a7fb062b265075f241e;p=thirdparty%2Fdovecot%2Fcore.git

lib: unichar - Implement uni_ucs4_to_titlecase() using the new Unicode character database
---

diff --git a/src/lib/unichar.c b/src/lib/unichar.c
index 62402a48c8..2a59169413 100644
--- a/src/lib/unichar.c
+++ b/src/lib/unichar.c
@@ -3,6 +3,7 @@
 #include "lib.h"
 #include "array.h"
 #include "bsearch-insert-pos.h"
+#include "unicode-data.h"
 #include "unichar.h"
 
 #include "unicodemap.c"
@@ -245,23 +246,12 @@ static bool uint32_find(const uint32_t *data, unsigned int count,
 
 unichar_t uni_ucs4_to_titlecase(unichar_t chr)
 {
-	unsigned int idx;
+	const struct unicode_code_point_data *cp_data =
+		unicode_code_point_get_data(chr);
 
-	if (chr <= 0xff)
-		return titlecase8_map[chr];
-	else if (chr <= 0xffff) {
-		if (!uint16_find(titlecase16_keys, N_ELEMENTS(titlecase16_keys),
-				 chr, &idx))
-			return chr;
-		else
-			return titlecase16_values[idx];
-	} else {
-		if (!uint32_find(titlecase32_keys, N_ELEMENTS(titlecase32_keys),
-				 chr, &idx))
-			return chr;
-		else
-			return titlecase32_values[idx];
-	}
+	if (cp_data->simple_titlecase_mapping != 0x0000)
+		return cp_data->simple_titlecase_mapping;
+	return chr;
 }
 
 static bool uni_ucs4_decompose_uni(unichar_t *chr)